let age = 25
console.log(age == 25)
console.log(age == 30)
console.log(age != 30)
console.log(age > 20)

let name = "David"
console.log(name == "David")
console.log(name == "Julia")


console.log(age === "25")
console.log(age !== "25")
let score = "100"

let res = Number(score)
console.log(res)
console.log(res - 1)
console.log(Number("David")) //NaN
let str = String(50)
console.log(str)
console.log(str, typeof str)
let bo = Boolean(100) //true
console.log(bo, typeof bo)